江西省2023年初中学业水平模拟考试（二）l物理试卷 答案(更新中)

江西省2023年初中学业水平模拟考试（二）l物理试卷 答案(更新中)，目前全国100所名校答案网已经汇总了江西省2023年初中学业水平模拟考试（二）l物理试卷 答案(更新中)的各科答案和试卷，更多全国100所名校答案请关注本网站。

第一节（满分15分）Dear Sir or Madam,I'm writing to inform you that I wish to move into a new room next term as I findthe present sharing arrangement inconvenient.I must explicit that the reason for my dissatisfaction is my roommate's inconsideratebehavior,For instance,he always burns midnight oils and make noises,which deprives meof high-quality sleep,In addition,he sometimes borrows my things without asking.Inthese circumstances,I find it difficult to concentrate on my studies,and I'm fallingbehindin my assignments.I'm sure you'll agree that the only solution is to move into a room of my own,whereI'll be free from such distractions.Therefore,I wouldn't be more grateful if you couldmanage a single room for me.Yours sincerely,Li Hua

【答案】B【解析】真核细胞在分裂间期主要进行DNA的复制和蛋白质的合成；DNA分子的两条链是反向平行的，从图中可以看出，在复制过程中，一条子链的形成是由片段连接而成的；大肠杆菌的拟核中含有DNA,可以发生DNA的复制，而复制过程需要的蛋白质（酶1和酶2）都是在核糖体上合成的；DNA单链结合蛋白能与解旋后的DNA单链结合，使单链呈伸展状态，这样可以防止解开的两条单链因为靠近又重新形成氢键。一。53●